716611491 has 24 divisors (see below), whose sum is σ = 1059701760. Its totient is φ = 466438896.

The previous prime is 716611481. The next prime is 716611501. The reversal of 716611491 is 194116617.

716611491 is a `hidden beast` number, since 7 + 166 + 1 + 1 + 491 = 666.

It is an interprime number because it is at equal distance from previous prime (716611481) and next prime (716611501).

It is a de Polignac number, because none of the positive numbers 2^k-716611491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (716611411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194020 + ... + 197678.

It is an arithmetic number, because the mean of its divisors is an integer number (44154240).

Almost surely, 2^716611491 is an apocalyptic number.

716611491 is a deficient number, since it is larger than the sum of its proper divisors (343090269).

716611491 is a wasteful number, since it uses less digits than its factorization.

716611491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175 (or 4172 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 716611491 is about 26769.6001277569. The cubic root of 716611491 is about 894.8726933143.

The spelling of 716611491 in words is "seven hundred sixteen million, six hundred eleven thousand, four hundred ninety-one".